Service of the piece 8-inch Howitzer M 1 - USA Field Artillery Field Manual, FM 6-91 Field artillery : tactics and technique of division artillery and higher artillery echelons - USA War Department Field Manual, FM 6-100 Advanced map and aerial photograph reading - USA Basic Field Manual, FM 21-26 Examination for gunners - USA Antiaircraft Artillery Field Manual, FM 4-119 far eastern series Trial of Japanese war criminals / Department of State Song and service book for ship and field. Army and Navy / ed. by Ivan L. Bennett, chairman of the editorial committee Field Artillery : Tactical Employment - USA Field Manual, FM 6-20
